<?php
/**
 * PHPUnit
 *
 * Copyright (c) 2001-2013, Sebastian Bergmann <sebastian@phpunit.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package    PHPUnit
 * @subpackage Runner
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      File available since Release 2.0.0
 */

/**
 * This class defines the current version of PHPUnit.
 *
 * @package    PHPUnit
 * @subpackage Runner
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 2.0.0
 */
class PHPUnit_Runner_Version
{
    const VERSION = '3.7.21';
    protected static $version;

    /**
     * Returns the current version of PHPUnit.
     *
     * @return string
     */
    public static function id()
    {
        if (self::$version === NULL) {
            self::$version = self::VERSION;

            if (is_dir(dirname(dirname(__DIR__)) . '/.git')) {
                $dir = getcwd();
                chdir(__DIR__);
                $version = exec('git describe --tags 2>&1', $output, $returnCode);
                chdir($dir);

                if ($version && $returnCode === 0) {
                    if (count(explode('.', self::VERSION)) == 3) {
                        self::$version = $version;
                    } else {
                        $version = explode('-', $version);

                        self::$version = self::VERSION . '-' . $version[2];
                    }
                } else {
                    self::$version = self::VERSION . '-dev';
                }
            }
        }

        return self::$version;
    }

    /**
     * @return string
     */
    public static function getVersionString()
    {
        return 'PHPUnit ' . self::id() . ' by Sebastian Bergmann.';
    }
}
